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Old 08-01-2014, 09:42 PM   #1
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Default Would solid diff work in FWD touring car?

I wanna try racing a fwd , I'm gonna try it anyway but has anyone ever run one with a solid diff or is ball diff / gear diff better for handling? Thanks
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Old 08-01-2014, 11:42 PM   #2
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i use one in my mini. works fine. never diffs out. pulls great out of the corners. try it.
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Old 08-02-2014, 07:07 AM   #3
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i use one in my mini. works fine. never diffs out. pulls great out of the corners. try it.
thanks, im modifying a car to try out. I will use a solid front diff and a one way in the rear but reversed so it only works as brakes......Only fronts will drive car but the rear will have brakes as well as the front for driving hard into the corners.
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Old 08-02-2014, 01:33 PM   #4
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Curious little project.

Make sure to place as much weight forward as possible. It is going to be hard to tame the wheel spin even with a mild system in the car.

It's going to steer and brake like a 4wd, but accelerate like a ff car.
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Old 08-02-2014, 01:38 PM   #5
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I did the reverse; I put a one-way diff reversed in a TA02 chassis, so that it was RWD on throttle but have four wheel brakes. Turned out not to be a great idea. I got understeer entering a corner from both fronts braking and the obvious oversteer trying to power out. I didn't really try to figure out solutions though.
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Old 08-02-2014, 02:03 PM   #6
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Unless your diffs are connected via a drive shaft or belts, how is the rear going to be able to "brake" using the one way? And if they are connected its not a FWD car, just a 4wd without the rear being used.
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Old 08-02-2014, 02:13 PM   #7
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2 wheels pulling/pushing the car forward = 2wd
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Old 08-02-2014, 02:35 PM   #8
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Originally Posted by peter george View Post
I wanna try racing a fwd , I'm gonna try it anyway but has anyone ever run one with a solid diff or is ball diff / gear diff better for handling? Thanks
I wouldn't use a spool/solid diff personally. I believe you still need the diff to, well, diff. Maybe go to thicker greases (or oils if you use a gear diff) if you need more punch out of the corners.
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Old 08-02-2014, 02:37 PM   #9
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2 wheel drive, and 2 wheels driving the car are not the same thing. If the car has the motor connected to only 2 drive wheels then it is a 2 wheel drive car. If the motor is connected to 4 drive wheels, but only 2 of them are being used to drive the car, it is still a 4 wheel drive with only 2 wheels driving.

He is using the motor to "brake" the rear tires, therefore all 4 wheels must be attached the drivetrain, making this a 4wd vehicle.
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Old 08-02-2014, 02:37 PM   #10
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Unless your diffs are connected via a drive shaft or belts, how is the rear going to be able to "brake" using the one way? And if they are connected its not a FWD car, just a 4wd without the rear being used.
Only front wheels drive the car, motor is in front of rear wheels. Only time rear is used is when braking. It's a two belt system so while rear belt is spinning, it's only free wheeling on the one way bearings in the one way diff. The trick is to install it opposite the normal way. May work better than anything I've ever driven or it may be a total disaster. Thanks for all the input guys. Back to my mad scientist work bench.
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Old 08-02-2014, 02:41 PM   #11
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Originally Posted by theproffesor View Post
2 wheel drive, and 2 wheels driving the car are not the same thing. If the car has the motor connected to only 2 drive wheels then it is a 2 wheel drive car. If the motor is connected to 4 drive wheels, but only 2 of them are being used to drive the car, it is still a 4 wheel drive with only 2 wheels driving.

He is using the motor to "brake" the rear tires, therefore all 4 wheels must be attached the drivetrain, making this a 4wd vehicle.
You are definetly not wrong , good point sir
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